吉林大学学报(地球科学版) ›› 2021, Vol. 51 ›› Issue (3): 825-832.doi: 10.13278/j.cnki.jjuese.20190322
甘心
Gan Xin
摘要: 针对现有常规螺杆钻具在研磨性强、可钻性差的难钻地层中存在破岩能量不足、机械钻速低、钻头消耗量大的问题,引入旋冲钻井破岩理念及轴向机械冲击破岩功能,研制了集合旁通阀总成、动力总成、传动总成和冲击总成于一体的ZYXC-244机械式旋冲螺杆(新型螺杆),并创新设计了防掉功能。通过对新型螺杆主要性能参数计算模型的分析,获取了其主要性能参数的特征变化曲线。新型螺杆先后在足203H1-3井和大湾4011-2井的须家河组等地层进行了现场应用,应用效果表明,新型螺杆进尺分别为685.00 m和72.53 m时与常规螺杆相比,机械钻速分别提高了38.2%和31.5%,节省了起下钻2次和2只钻头消耗,为难钻地层的提速提效提供了有效的技术手段。
中图分类号:
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